I have a problem with my CTRL key. Exemple: hiting CTRL+L selects the lasso tool instead of poping up the levels window. I believe that my ALT GR key is behaving like the CTRL key, but only for some functions (ALT GR+L works for levels, ALT GR+M works for curves, ALT GR+W closes the photo, but ALT GR+¨and ALT GR - doesn't zoom in/out the photo).